On the Internet, dlb stands for English quot; dirty little bastard quot; which in Spanish translates as quot; small and Dirty Bastard quot;. The classic guy who is usually always go after the girls skirts. DLB are the initials of Dementia with Lewy Bodies which means quot; dementia with Lewy bodies quot;. It is a type of progressive dementia that leads to a decline in thinking, reasoning and independent function due to abnormal microscopic deposits that damage the cells of the brain with the passage of time.